General

Your list is good seems like you can't go wrong, but Baccano! first IMO

code geass, then madoka magica
the rest is up 2 u

I'd say Code Geass first, storyline and plot is epic <3

Code Geass

Clannad for last since it's a longgg feeltrip

Baccano was pretty good, I'd say that or Code Geass first.

I love Baccano!11!

code geass first
as someone said , baccano looks good

Baccano! Alphabetical order!

Also, strange as this may sound, watch Baccano in English. The English VAs do a fantastic job with this one!

if you want to cry, you should try clannad

I'd go with Clannad. I just watched it myself, and it's amazing.

I'd save Gintama for last since it's the longest

oh thats a hard one.

If you want action:
Code Geass
Magi: The Labyrinth of Magic
Baccano!
Puella Magi Madoka Magica

Romance:
Clannad and Clannad After Story

Comedy:
Gintama

Now i would honestly say Code Geass then Clannad since they are very good.

I'd go with Baccano first seeing as how it's the shortest. Or you could go Code Geass then Baccano then Clannad then Magi then Madoka then Gintama. There's really no reason besides the formers being rather sad compared to the latters.